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Without an equality sign the terms given can't be considered to be an equation

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Q: What is the value of x in the equation 4x- 20 -4?

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4x+5y = 20 5y = -4x+20 y = -4/5x+4 So the slope is -4/5 or as -0.8 and the y intercept is 4

It is an equation and the value of x is 4

Without an equality sign it cannot be considered as an equation and the + or - value for 4 has not been given

4x + 5y = 20 5y = -4x + 20 y = (-4/5)x + 20/5 Now that the equation has been rewritten in standard form, the slope is the cofficient of x, -4/5 [or -0.8]

4x-7y = -4 4(x+y = 0) Mutiply all terms in the bottom equation by 4: 4x-7y = -4 4x+4y = 0 Subtract the bottom equation from the top equation: -11y = -4 Divide both sides by -11 remembering that a minus divided into a minus becomes a plus: y = 4/11 Substitute the value of y into the original equations to find the value of x: Therefore: x = -4/11 and y = 4/11

Related questions

4x - 20 = -44x = 16x = 4

4x+5y = 20 5y = -4x+20 y = -4/5x+4 So the slope is -4/5 or as -0.8 and the y intercept is 4

2(4x + 4) = (4x - 12) 8x + 8 = 4x - 12 8x - 4x + 8 = 4x - 4x - 12 4x + 8 = -12 4x + 8 - 8 = -12 - 8 4x = -20 4x/4 = -20/4 x = -5

4x + 8y = 20-4x + 2y = -30First add equations 1. & 2. to get:(4x + -4x) + (8y + 2y) = 20 + -30⇒ 10y = -10⇒ y = -1Multiply equation 2. by 4 and subtract it from equation 1:4x + 8y = 20-16x + 8y = -120⇒ (4x - -16x) + (8y - 8y) = 20 - -120⇒ 20x = 140⇒ x = 7Solution x = 7, y = -1Alternatively, to find x, now that y is known to be -1:Substitute y = -1 into equation 1. to give:4x + 8(-1) = 20⇒ 4x -8 = 20⇒ 4x = 28⇒ x = 7The solution can be checked y substituting the values found for x and y in to equation 2. and checking it is the correct value:-4x + 2y = -4(7) + 2(-1)= -28 + -2= -30as required, so the solution is correct.

7 3x + 4 = 19 3x = 15 x = 5

It is an equation and the value of x is 4

It is an equation and the value of x is 4

Without an equality sign it cannot be considered as an equation and the + or - value for 4 has not been given

4x + 5y = 20 5y = -4x + 20 y = (-4/5)x + 20/5 Now that the equation has been rewritten in standard form, the slope is the cofficient of x, -4/5 [or -0.8]

4x-7y = -4 4(x+y = 0) Mutiply all terms in the bottom equation by 4: 4x-7y = -4 4x+4y = 0 Subtract the bottom equation from the top equation: -11y = -4 Divide both sides by -11 remembering that a minus divided into a minus becomes a plus: y = 4/11 Substitute the value of y into the original equations to find the value of x: Therefore: x = -4/11 and y = 4/11

If the equation is -4x + 2 = 26, then you can solve like so: -4x + 2 = 26 -4x = 26 - 2 = 24 4x = -24 x = -6 Check: -6 * -4 = 24, 24 + 2 = 26

The value of x is 11/2